Sharpener



FIG. 1 is a left side elevational view of a knife sharpener showing our new design;

FIG. 2 is a right side elevational view of the knife sharpener of FIG. 1;

FIG. 3 is a top plan view of the knife sharpener of FIG. 1;

FIG. 4 is an elevational view of the rear of the knife sharpener of FIG. 1;

FIG. 5 is an elevational view of the front of the knife sharpener of FIG. 1;

FIG. 6 is a bottom plan view of the knife sharpener of FIG. 1;

FIG. 7 is a left side rear perspective view of the knife sharpener of FIG. 1;

FIG. 8 is a right side front perspective view of the knife sharpener of FIG. 1; and,

FIG. 9 is a top side perspective view the knife sharpener of FIG. 1. 

CLAIM The ornamental design for a sharpener, as shown and described. 